While the PlayStation.com blog says that Haze runs at 720p, the game's creative lead Derek Littlewood begs to differ, saying the game runs at 576p, letting the PS3 upscale the game. Says Littlewood:

We prioritise a nice smooth framerate over a different res. Personally, I don't really buy the whole thing. People did the same with Call of Duty, they did the same with Halo, and they say with those games ‘It's not running at true HD!' And it's like, I don't care. If the game looks good and it runs smoothly, those are the important things to me.

When Derek Littlewood is right, Derek Littlewood is right. There are more important things, like whether or not a game is any good or whether your pre-order should be canceled.